/*
 * Copyright (c) 2014-2022 Stream.io Inc. All rights reserved.
 *
 * Licensed under the Stream License;
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    https://github.com/GetStream/stream-chat-android/blob/main/LICENSE
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.getstream.chat.android.client.utils

import io.getstream.chat.android.client.extensions.internal.NEVER
import io.getstream.chat.android.core.internal.InternalStreamChatApi
import io.getstream.chat.android.models.User

/**
 * Partially merges [that] user data into [this] user data if [that] is more up to date.
 */
@InternalStreamChatApi
public fun User.mergePartially(that: User): User =
    if (that.isMoreUpToDateThan(this)) {
        this.copy(
            role = that.role,
            createdAt = that.createdAt,
            updatedAt = that.updatedAt,
            lastActive = that.lastActive,
            banned = that.banned,
            name = that.name,
            image = that.image,
            privacySettings = that.privacySettings,
            extraData = that.extraData,
            mutes = that.mutes,
        )
    } else {
        this
    }

private fun User.isMoreUpToDateThan(that: User): Boolean =
    (this.createdAt ?: NEVER) > (that.createdAt ?: NEVER) ||
        (this.updatedAt ?: NEVER) > (that.updatedAt ?: NEVER)
